光焊接纳米粒子：从金属溶胶到自支撑、导电性金属薄膜

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Published in	中国科学：材料科学（英文版） Vol. 60; no. 1; pp. 39 - 48
Main Author	陈菲杨抒臻吴振军胡伟胡家文段镶锋
Format	Journal Article
Language	English
Published	2017
Subjects	导电性焊接技术纳米粒子薄膜自支撑自组装技术金属溶胶金属粒子金属薄膜
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ISSN	2095-8226 2199-4501

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Bibliography:	Bottom-up assembly of nanostructured thin films could offer an alternative low-cost approach to elec- tronic thin films. However, such solution-processed thin films are often plagued by excessive inter-particle resistance and only exhibit limited current delivering capability. Here, we report a novel approach to fabricate highly conductive free-standing metallic thin film, accomplished by combining interfacial self-assembly of nanoparticles （NPs） and a light welding process. We found that light from a xenon lamp can weld adjacent Ag and Au NPs assembled at the water-air interface, forming a highly interconnected, free-standing metallic thin film structure with excellent electrical transport properties. With such a unique structure, the resultant thin metallic films show not only high flexibility and robustness, but also high conductivity comparable to bulk metallic thin films. Our studies offer a low-cost, room-temperature, and solution-processable approach to highly conductive metallic films. It can significantly impact solution-processable elec- tronic and optoelectronic devices. interracial self-assembly, nanoparticle, light welding,conductive metallic film, photodetector Fei Chen1, Shuzhen Yang2, Zhenjun Wu1, Wei Hu2, Jiawen Hu1. and Xiangfeng Duan1,3. 1 State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China 2 School of Physics and Electronics, Hunan University, Changsha 410082, China 3 Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA
ISSN:	2095-8226 2199-4501